Memory problems

Hopfield s neural net model addressed the basic associative memory problem [hopf82] Given some set of patterns Vi, construct a neural net such that when it is presented with an arbitrary pattern V, not necessarily an element of the given set, it responds with a pattern from the given set that most closely resembles" the presented pattern. 

No memory problem when repeatedly partially discharged... 

Stage 1 No cognitive impairment No memory problems and no impairment is evident to a health care professional. 

The sleep-inducing effect of some antidepressants has been used as an additive strategy in depressed patients with complaints of insomnia to negate the side effects of BZDs that could be confused with worsening depressive symptoms, including asthenia, diurnal sedation, and concentration and memory problems. 

Neurocognitive impairment Deficits in attention, information processing, memory, problem... 

Patient has difficulty remembering recent events. Abilily to manage finances, prepare food, and carry out other household activities declines. May get lost while driving. Begins to withdraw from difficult tasks and to give up hobbies. May deny memory problems. 

We can, I think, dismiss the first of these fairly easily because it seems that this is not a pure memory problem. For one thing, memory for individuals is probably stored elsewhere in the cortex (just as spatial memory is located in the hippocampus O Keefe Nadel 1978, Barton Purvis 1996). More importantly, perhaps, the whole essence of the social brain hypothesis is that it is the manipulations that individuals do with the information they have that is important rather than just remembering who s who. Finally, all the work on theory of mind in humans has shown quite conclusively that the problem lies in understanding another individual s mental state not in remembering factual information (Happe 1995, Kinderman et al.. in press) (see below, section 2.2). 

Dementia. In the elderly, you may have difficulty distinguishing depression from the early stages of dementia. Depressed patients often report memory problems and may even ask, Do 1 have Alzheimer s disease It is usually not that their memory itself is impaired. Their forgetfulness is more the result of apathy and poor concentration that leads them to overlook the things going on around them. The result is a false dementia or pseudodementia. On the other hand, patients with true dementia often become depressed as well. 

Amnesia. Like dementia, the main feature of amnesia is memory loss. Amnesia, however, does not affect other intellectual abilities in the same manner as dementia. Distingnishing dementia from amnesia is most often a consideration when you evaluate memory problems in a chronic alcoholic. Alcoholics may become demented, but they may also develop an amnestic disorder known as Wernicke-Korsakoff syndrome. 

Memory problems, confusion, speech impairment, learning impairment... 

Psychological symptoms anxiety, confusion, memory problems... 

The initial study of clonazepam in social phobia conducted by Versiani et al. [1989] showed an overall benefit of the drug. This 8-week, open trial of 40 subjects displayed statistically significant lowering of scores on the efficacy variables, which included the Clinical Global Improvement and Severity Scales [Guy 1976], Liebowitz Social Anxiety Scale [liebowitz 1987], Hamilton Anxiety Scale [M. Hamilton 1959], and the Sheehan Disability Scale [D. V. Sheehan 1986]. The mean dose of clonazepam was 3.9 mg/day [SD 0.5 mg]. Subjects in this study reported high rates of side effects, including sleepiness [67.5%], loss of libido [67.5%], and memory problems [35%]. 

Since this simulation will run for a long time and we have specified a small Maximum Step Size, a lot of data will be collected. PSpice normally collects voltage data at every node and current data through every circuit component This results in a large Probe data file that can take a long time to load and may cause memory problems. Since we are interested only in the input and output voltages, we will tell PSpice to collect data only at the input and output nodes, which will be marked with markers. 

For example, low levels of thyroxine (T4) have been found in patients with significant confusion and memory problems after ECT. Furthermore, consistent with data from animal studies, 50 pg of triiodothyronine (T3) given before ECT diminished amnestic effects and accelerated the antidepressant effect of ECT (134). 

I have learned other tricks from my own memory problems and those of my patient informants. First and foremost, I know just how totally helpless one becomes when recent memory fails. Dreams emphasize this point through the frequency of these disconcerting, incomplete arrangement scenarios that we have already considered. Without recent memory I am lost, disoriented, feel confused, get very anxious, and run around in circles. So armed with dream neurodynamics, I can empathize more effectively with amnesics, and I can advocate a gamut of remedies more authoritatively. 

MS because of a large persistent, mercury memory problem in conventional ICP-MS . 

In fact, on the rare occasion that this standard has been applied to studies on alternative medicines such as gingko biloba, the results have not been positive. For example, a pair of very large clinical trials that followed the health of more than 3000 people of various ages for 8 years clearly demonstrated that gingko biloba cannot influence the development of age-related memory problems. Another trial indicated that the use of gingko may actually be harmful by increasing an individual s risk of nonhemorrhagic stroke, which is when a blood vessel in the brain becomes blocked and shuts off blood flow. 

Anterograde amnesia is another problem sometimes associated with sedative-hypnotic use.39 The patient may have trouble recalling details of events that occurred for a certain period of time before the drug was taken. Although usually a minor problem, this can become serious if the drug-induced amnesia exacerbates an already existing memory problem, as might occur in some elderly patients. 

Amphetamine psychosis causes feelings of severe paranoia and auditory and visual hallucinations. The amphetamine addict who is psychotic typically experiences delusions of persecution, believing someone, or everyone, is out to get them. Because of these paranoid delusions, violence can frequently occur during amphetamine psychosis. Once the amphetamine abuser is free of the drug, psychosis fades quickly. However, symptoms such as mental confusion, memory problems, and delusional thoughts may last up to several months or longer. 

Some people who take PCP experience symptoms very similar to those seen in people with schizophrenia, including delusions, paranoia, memory problems, confusion, disordered thinking, and impaired speech. This is called PCP organic mental disorder. Such schizophrenialike episodes usually last several days, but they may last weeks or months after taking the drug only once. Such a reaction is most common in chronic users, but it can... 

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